Controller



vSeqjzt. 15

' E. E. ROSE ET AL CONTROLLER 3 Sheet s-Sheet 1 Filed Sept. 8, 1921 WITNESSES:

mm 0 Mia a 0 6 MW ATTORNEY Sept. 15, 1925.

- 1,553,398 v E. E. ROSE ET AL CONTROLLER 3 Sheets-Sfieet 2 Filed Sept. 8, 1921 VENTORS zgamigw java? 0 ia gfl a; 0i?

ATTORNEY E. E. ROSE ET AL.

Sept 15, 1925.

- CONTROLLER File'd Sept. 8, 1921 3 Sheets-Sheet 3 Rs 05:12:10 apiar ATTORNEY m i WW Patented Sept. 15 1925.

EDWARD E. nose, or fnnenwofon, AND olrror. "enemie 0F a nea rnuir'ngil nm t env m ssmnoa e weenaea se "ELnoTieIo rub i/iAniirhorimme 00M- P'AN A oonronzirron or j PENNSYLVANIA.

anemones.

To all tvhomitmtay mwem:

Be it known that We-{Eflwkrin "Rosn, a cit-iZenfOf t'heYUnitecl States, andren- (lent "of E'clgewoocl in the county of Allegheny and "State of Pennsylvania, andiOr'ro, P. Soiiosriinfa citizen of the United- States, and-a resident of North Iin vin, in the county of at estmereland and State of Pennsylvania, have inventecla new and useful Iniprovenient in Controllers, of Which theifOllowing is aspecification.

1 Our jinvention relates to controllers :for governing the operation of dynamo-electric machines anclit has -part'icular r-laitionito those employed for governing a plurality of motors such, for example, 'ias are recfuirecl for clriv ing'an electric locon'i'otive.

One object otour invention' is to provide a controllerthat shall be simple ntl ec onoinical in construction antl positive and reliable in operation. g g

: Another ob ectOf our inventlon'isto-provide interlocks for a;plurality";of"control drums, whereby it shall be iinpossihle 'to ;-actuate 'certain 'of the drums when other drains occupy precleterininecl-positions.

Briefly speaking, our invention consists in ..-provirlin'g irn'p'rov'etl interlocks between the several control drums to eflect aiclesiretl sequence of operation thereof and to E-prevent in'iprop'er control-circuit relations. For a better understanding ennui-unveition, reference *may he made to L the accompanying drawings, l v

:IFigure '1 of which is "a p lan view of a controller embed in -our"invention 2: 7

Fig. .2 is a-vie'w, partly in "side elevationand shown in Fig. 1;

-F.ig s- 3 g and are sectional views taken along the lines "liII-HI"and "IV- 12V, respectivelyyof Fig. 2;

Figs. 5, e and 7 are dean, 512111, side-fend end views, respectively, of one ofthe pfawvls or interlocking iiieiiiheis that-are shown in Figsfiltoe, inclusive; V

Figs-Sand 9 are views, hr plair ancl-iirsicle elevation, respectively, of ==anotl1e1 pawl or interlocking member in the controller that is illustrated in Figs. *1 to inclusive.

Figs. 10, 11 and 'llQ a'1 'e '-vievvs, in -plan, side anclen'd elevation, i respectively, of a third pawl or interlocking member that is partly in section, or the controller F F Referringparticularly to Figs. lito' 4 ,'-inelusive, "a controller 1 has a supporting frame orfcase "2 and cover await-1'11 is pivotally inou'ntecl'upon the case Qhy a plurality of hinges 4. "Thecover3 may be looked in its;'closecliposition" by means "of fa'lat liing devicefi (seefFigs. mm). The controller 1 isp'rovitled 'W'it'h areverse drum 56. that is aclaptecl to engage a plurality tcentml fingers 7, .a speed "drum "8 'forjfconti'olling a pl hrality j'of ,a-ccel'eratin'g switches that (not shown), a i "motor-combination drum [9 fer-changin the relation "of the motors fr'ojin series" to series-parallel relation or froin series-parallel to parallel relation, in accordance vifiththe parti'cnlar operating conditions' 'of the} control system, and a f regenerative druinl'O that governs the inotorsjdur- 'ing electrical-braking. r

The reverse druni. 6 is securely inountejcl upon "a 'sha ft- 11, which inay be actuated by afreverser hantlle 12. The speed securely rmountecl upon the shaft 13, having apinionlt'securely attac'hecl'thfereto at its upperencl. The pinion 14: isactuated 'byfa "gear-Wheel sector- 15,'Whieh is mechanically "connected toa speecLhandleIG b-y a shaft 17, to ivhich both 'are securely attached. "The inotor c'onihination drum 9 is -se- "cure-1y in'ountecl upon-a shaft 18, Whichjis provided Witha handle'19 in'ountecl upon the shaft 18 antl hasa pinion FQIISeeurecl to itsupper' end. The pinion '21' he actuated by, a gear-Wheel. sector '22, T Which is ineclia nically connected to a j shaft 24. A ;snitahle handle is rovided for theshaft' ey Tliefshaftsfl l,13 and 18mm rotat-ably mounted 3 [the'controller 1 hy neans ot'r a. plurality of 1 ltfgs" oi-supportingme l Whiclrfo'rin a part of the case 2.

Referring particularly to Fig. 4 of the at its upper end. 7 The regenerative drum 10 is rotatably hers 25, *2'6fand 27, respectively,

vided with a cam or interlocking member 28 .having a plurality of notches 30 and 31 corresponding to forward operation and re: verse operation respectively, and liavlng an intermediate projecting portion 29 provlded with a notch 29a corresponding to the neutral or off position.

The regenerative drum 10 is provided with a cam or interlocking member 32 having a motoring notch 34 and a regenerative notch 35 which are separated by a' project-' ing portion 36, as is best illustrated in Fig. 14 of the drawing.

The regenerative drum 10 is provided with a plurality of contact segments 37 that are adapted to engage a plurality of contact lingers 38 to effect energization of the actuating coils of a plurality of switches (not shown) for governing the main motor circuits during regeneration. The regenerativc handle 23 is restricted by a stop member 2364- from actuating the cam member 32 in a clockwise direction beyond the position illustrated by Figs. 1 and 2 of the drawing. The cam member 32 may be actuated in a counter-clockwisedirection through a plurality of subordinate r accelerating positions corresponding to positions 1 to 9,

inclusive, of the regenerative controller handle 23. i

The speed drum shaft 13 is provided with a collar 39 having a recess 40, which normally occupies the illustrated position, corresponding to the or position of the speed drum. The speed drum 8 is provided with a purality of contact segments 41, which are adapted to engage a plurality of control fingers 42a to establish circuits that energize the actuating coils of a plurality of accelerating switches (not shown) for governing the speed of the motors.

An interlock or pawl member 42 is pivotally mounted on a pin 43 that is positioned between the reverse drum 6 and the speed drum 8 of the controller 1. A plurality of pawl members 44 and 45 are pivotally mounted upon a pin 46 that is securely positioned between the speed drum 8 and the regenerative drum 10. e

For a better understanding of the shape of the pawl member 42, reference may be made to Figs. and 7 of the drawing. The pawl member 42 is provided with a pointed lug or projection 47 which co-operates with the reversing cam member 28, and a lug 48 that is adapted to fit in the recess 40 of the ring member 39 which is securely mounted upon the speed drum shaft 13. The pawl'42 is provided with a third lug 49 having a hole 51 therein, in which the pin 52 (see Fig. 4) may be mounted, and a hole 53' for holding a cotter-pin 54 to prevent longitudinal movement of the pin 52. The pawl 42 is so designed that the reversing cam member 28 can be reversed only when the speed drum 8 is in the off position, as it is then that the lug 48 fits in the recess 40 of the ring 39.

When the reverse drum 6 is in its off position, the projection 29 of the cam member 28 so engages the projection 47 of the pawl member 42 that it is impossible to withdraw the lug 48 from the recess 40 of the ring 39, thus rendering it impossible to move the speed drum 8 from its off position.

The co -operating pawl member 44, which is illustrated by Figs. 8 and 9, has a lug 56 that is also adapted to fit in the recess 40 of the annular member 39 that is mounted upon the speed shaft 13.

At the other end of the pawl member 44, a projecting port-ion 57 is provided, having a hole 58 that is adapted to hold the pin 59, as illustrated in Fig. 4 of the drawing. Lugs 61 and 62 are provided on the pawl member 44 to limit its movement in a manner that will hereinafter be more fully described.

The. pawl member 45, which is illustrated by Figs. to 13, inclusive, comprises a projecting portion 63 in which a roller 64 is mounted upon a pin 65 (see Figs. 4 and 13). The pawl member 45 comprises a projection 66 having a hole 67 therein, in which the pin 52 is slidably mounted (see Fig. 4). The pawl member 45 is provided with a projecting portion 68 having a hole 69 therein, in which the pin 59 is mounted. A hole 70 is provided in the projection 68 for receiving cotter pin 71, which isillustrated in Fig. 4 of the drawing. v

A plurality of lugs 72 and-7 3, constituting part of the pawl member 45, co-operate with the lugs 61 and 62, respectively, of the pawl member 44 to limit the relative movement, in both directions, of the pawlmembers 44 and 45.

A resilient member, such, for example, as a spring 75, is mounted upon the pin 52 be tween the projection 49 of the pawl 42 and the projection 66 of the pawl 45. The spring 75 biases the pawl members 42 and 45, respectively, against the corresponding cam members 28 and 32. The projections 57 and 68 of the pawl'members 44 and 45, respectively, are normally maintained a relatively great distance apart by a resilient member, such, for example, as a spring 76, which is mounted upon the pin 59.

The lugs 61 and 72' of the corresponding pawl members 44 and 45 limit the relative movement of the pawl members 44 and '45. The lug members 61 and 72 are so disposed that, when the roller 64 fits into either the motoring notch 34 or the regenerative notch of the cam member 32, the projection 56 of the pawl 44 will be clear of the recess of the annular member 39 which is mounted upon the shaft 13.

' When the roller 64 is in any other posin F QIL JQWhBSEi tQ 3e.th .pre u .ai plied to the, spring ,76 T by the projjection 1 68 o'tfjthe pawl member 'tj5 will be transmitted i' th ft geii rative drum e n n of its regenerative positions, whichware in dicatedb'y:thechara terS l to 9, inclusive, upon the notch plate 718, the speed controller-F8 can no't bejactuated trom its off position, orifit the controller 8 1is re turned fto. -i,t's

olf pos'itio'n, fit is necessary to return the regenerative drum 10 to it first position before again .notdhin 'g up the speed v drum 8.

The projection 3 6"upon theflcam member 32 so designed that the roller can pass over any when ,the projectien 5,6 ofthe pawl member 4A: "is in the recess A0 of the iui le .n e nbe 3 ea is attach d to the speed drum shaft 13. lhe projections and '73.,'o f the pawl ,members 4 4 fand f), .re-

spectiyely, are so gtl esi gned .that they limit o e ef e that an Th appl e t he sprin'g 76 by the pawlinmbers 4A andj lo and" also their relative angular movement, thereby preventing th o j e T6 tram passing overt-he ection 36 p of the cam me1n- 2, whenith spee -fidntrol er ocs'm occupy its;rofi',posit'ion. i i

The operation f the control system is vbe c "b a e tin he net-ente hand e. f flft either"its forward or its reverse pQsitiQn, in

accordance with the direction of operation that is desired. Then the reverser 6 occu- P eitl r as n v se it d w a 'r s r tion, the pawl member 42 is actuated ina clockwise direction by the spring 75 to disengage the projection tSUthereof from the recess 40 "o fpthe annular ,member 39, which is securecl to the speed drumshaft 13.

The speed drum 8 may be actuated by means of the speed handle 16 through its various accelerating positions, provided the regenerative controller 10 occupies its motoring position. When the speed drum handle 16 has reached its last position and the motors have attained aspeed corresponding to that notch, the speed handle 16 may be actuated backwardly to its third notch, and the motor-combination handle 19 be actuated to change the connection of the motors from series-parallel to parallel rela tion or whatever other arrangement of the motors that the operating conditions require.

As the shaft 18 upon which the motorcombination drum 9 is mounted is not mechanically interlocked wlth the regenerativeceet l ri nimi nth shaft 1 :8 can be actuatec (independently, of. the till-H1118 6, r8 1 and IQ. When the ,motor-comhination d1 um s9- occupies the new position, the speed handle I6 may again be actuated toefiectjunovement .of the speed v,driunfi in a-manzner that will effect further acceleration of the #11107 tors.

1T0 e c e n ra io eft eim r l nderhigh speedconditions, itis necessany toreturn the speed drum-i8 'to its fotP position and .to actuate the regenerative drum 0 I em s ne .0 P mary me er ng 15 siti'onto .its-ifirst or basic regenerative position. {time is eiiecte'd by propenly actuatinm 2D the jregeneratiwehandle 23, 1 thereby effecting movement of the gear-wheel sector 22 and the pinionfl l. The roller 6,4; will pass over the ,prpjection 36 .of the cam member 32, when vthehandle 23 is actuated, provided the speed drum 8 in its-oft position. After th e regenerative .d1 ll1l119 occupies its first or J nain position thespeed; drum 8 may first be actuated through its vanious ;oper.ating positions; and then the regenerative; difum maybe operated through its secondary :or .su ordinate positions :1" to 91, inclusiive by' meansof the regenerativehandle23, to litany the electrical; braking e'fliect of the motors, as desired. 7 i

lia g n ra es br king may h eflfecte d by returning l the regenerative. drujm 10 to its basic ,position andit-he speed dr um 8 o :itsltioif "positionuand then,achuatingthe to its series-parallel position. lihe speed 11 1 1am T actuetcd thro gh lts perating p siti ns, be netne ng re genenativedrum 10 .through regulating or subordinate positions.

If the speed drum ;8 is actuated to its fiv'position, when the regenenativefldrum l0occlugpies any but its ,first position, the

speed drum 8 will be locked in its Hoff position by the pawl nre n-bar 44-, until ;t;he

regenerative ,jdrum 10 has been returned to its first position.

From the above description, it is apparent that we have so provided a controllerwith interlocks'that it is impossible for the operator to effect incorrect movement of one or more of the control drums with respect to the remaining drums.

While we have shown the apparatus embodying our invention in the preferred form, it is apparent that minor. modifications may be made in the shape and arrangement of parts of the controller without departing from the spirit of our invention. We desire, therefore, to be limited only by the scope of the appended claims.

We claim as our invention:

1. In a controller, the combination with a plurality of rotatable cam members, each of said cam members being capable of ocmotor-combination drums) i 'rom its parallel lee.

bers, means for limiting the relative movement of said arms, and means for biasing said arms in a predetermined'angular relation. a

3. In a controller, in combination, a plurality of cam members, each of said cam members being disposed to occupy a plurality of positions and means for controlling the sequence of operation'of the cam members comprising an arm adapted to interlock two of the cam members, a plurality of arms for interlocking another of the cam members to one of said two cam members, and resilient members interposed be tween selected pairs of said arms to 'efiect their operation as the cam members are operated in a predetermined order.

I. In a controller, in combination, a pluralityof cam members, each of said cam members being disposed to occupy a plural ity of positions and means for controlling the sequence of operation of the cam members comprising a pivotally mounted member for interlocking one pair of said cam members, av plurality of pivotally mounted co-acting members for interlocking another pair of cam members and resilient means for biasing said interlocking members in a predetermined relation asv said cammembers are operated in a predetermined order.

5. In a controller, in combination, a plurality of cam members disposed to occupy a plurality of positions, control drums adapted to be operated by said cam members, and means for controlling the sequence of operation of the cam members comprising a plurality of arms disposed to engage said cam members and springs interposed between selected pairs of arms to effect an interlocking of the cam members as, said cam members are actuated in a predetermined sequence. 1

6. In a controller, in combination, a plu-' rality of cam member's, drums disposed for actuation by said cam members and means for controlling the operation of the cam members comprising arms disposed to engage the cam members, springs interposed between pairs of arms to urge them into engagement with the cam members, said springsbeing disposed to eflect a predetermined operation of the arms as the cam members are operated thereby to control the sequence of operation of; said drums.

7. Ina controller, in combination, a plug rality of control drums, cam members connected to said control drums and means for, controlling the operation of said cam members including a pair of arms pivotally mounted between a pair of cam members, resilient means interposed between said arms adapted to effect a relative angular movement of said arms, stops carried by the arms to limit the angular movement, a single arm disposed between one of said pair of cam members and another of the cam members and resilient means interposed between one arm of said pair of arms and said single of Sep- 

